taxonomy source Imajima, M. (1976). Serpulinae (Annelida, Polychaeta) from Japan I. the genus Hydroides. Bulletin of the National Science Museum, Tokyo, Ser. A (Zoology). 2(4): 229-248.page(s): 54; note: The Zachs record is synonymised with H. ezoensis. This does not mean Imajima was synonymising the original Serpula diplochone [details]